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[Qemu-devel] [PULL 20/22] hw/acpi-build: build SRAT memory affinity stru
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 20/22] hw/acpi-build: build SRAT memory affinity structures for DIMM devices |
Date: |
Tue, 13 Mar 2018 23:45:38 +0200 |
From: Haozhong Zhang <address@hidden>
ACPI 6.2A Table 5-129 "SPA Range Structure" requires the proximity
domain of a NVDIMM SPA range must match with corresponding entry in
SRAT table.
The address ranges of vNVDIMM in QEMU are allocated from the
hot-pluggable address space, which is entirely covered by one SRAT
memory affinity structure. However, users can set the vNVDIMM
proximity domain in NFIT SPA range structure by the 'node' property of
'-device nvdimm' to a value different than the one in the above SRAT
memory affinity structure.
In order to solve such proximity domain mismatch, this patch builds
one SRAT memory affinity structure for each DIMM device present at
boot time, including both PC-DIMM and NVDIMM, with the proximity
domain specified in '-device pc-dimm' or '-device nvdimm'.
The remaining hot-pluggable address space is covered by one or multiple
SRAT memory affinity structures with the proximity domain of the last
node as before.
Signed-off-by: Haozhong Zhang <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
hw/i386/acpi-build.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 52 insertions(+), 4 deletions(-)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index ebde2cd..1df9ed2 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2250,6 +2250,55 @@ build_tpm2(GArray *table_data, BIOSLinker *linker,
GArray *tcpalog)
#define HOLE_640K_START (640 * 1024)
#define HOLE_640K_END (1024 * 1024)
+static void build_srat_hotpluggable_memory(GArray *table_data, uint64_t base,
+ uint64_t len, int default_node)
+{
+ MemoryDeviceInfoList *info_list = qmp_pc_dimm_device_list();
+ MemoryDeviceInfoList *info;
+ MemoryDeviceInfo *mi;
+ PCDIMMDeviceInfo *di;
+ uint64_t end = base + len, cur, size;
+ bool is_nvdimm;
+ AcpiSratMemoryAffinity *numamem;
+ MemoryAffinityFlags flags;
+
+ for (cur = base, info = info_list;
+ cur < end;
+ cur += size, info = info->next) {
+ numamem = acpi_data_push(table_data, sizeof *numamem);
+
+ if (!info) {
+ build_srat_memory(numamem, cur, end - cur, default_node,
+ MEM_AFFINITY_HOTPLUGGABLE |
MEM_AFFINITY_ENABLED);
+ break;
+ }
+
+ mi = info->value;
+ is_nvdimm = (mi->type == MEMORY_DEVICE_INFO_KIND_NVDIMM);
+ di = !is_nvdimm ? mi->u.dimm.data : mi->u.nvdimm.data;
+
+ if (cur < di->addr) {
+ build_srat_memory(numamem, cur, di->addr - cur, default_node,
+ MEM_AFFINITY_HOTPLUGGABLE |
MEM_AFFINITY_ENABLED);
+ numamem = acpi_data_push(table_data, sizeof *numamem);
+ }
+
+ size = di->size;
+
+ flags = MEM_AFFINITY_ENABLED;
+ if (di->hotpluggable) {
+ flags |= MEM_AFFINITY_HOTPLUGGABLE;
+ }
+ if (is_nvdimm) {
+ flags |= MEM_AFFINITY_NON_VOLATILE;
+ }
+
+ build_srat_memory(numamem, di->addr, size, di->node, flags);
+ }
+
+ qapi_free_MemoryDeviceInfoList(info_list);
+}
+
static void
build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
{
@@ -2361,10 +2410,9 @@ build_srat(GArray *table_data, BIOSLinker *linker,
MachineState *machine)
* providing _PXM method if necessary.
*/
if (hotplugabble_address_space_size) {
- numamem = acpi_data_push(table_data, sizeof *numamem);
- build_srat_memory(numamem, pcms->hotplug_memory.base,
- hotplugabble_address_space_size, pcms->numa_nodes -
1,
- MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
+ build_srat_hotpluggable_memory(table_data, pcms->hotplug_memory.base,
+ hotplugabble_address_space_size,
+ pcms->numa_nodes - 1);
}
build_header(linker, table_data,
--
MST
- [Qemu-devel] [PULL 13/22] tests: acpi: don't read all fields in test_acpi_fadt_table(), (continued)
- [Qemu-devel] [PULL 13/22] tests: acpi: don't read all fields in test_acpi_fadt_table(), Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 15/22] qemu-options-wrapper.h: fix include patch, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 14/22] vhost: used_memslots refactoring, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 12/22] virt_arm: acpi: reuse common build_fadt(), Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 11/22] acpi: move build_fadt() from i386 specific to generic ACPI source, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 17/22] hw/pci: remove obsolete PCIDevice->init(), Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 18/22] pc-dimm: make qmp_pc_dimm_device_list() sort devices by address, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 16/22] standard-headers: update virtio_net.h, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 19/22] qmp: distinguish PC-DIMM and NVDIMM in MemoryDeviceInfoList, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 21/22] tests/bios-tables-test: add test cases for DIMM proximity, Michael S. Tsirkin, 2018/03/13
- [Qemu-devel] [PULL 20/22] hw/acpi-build: build SRAT memory affinity structures for DIMM devices,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL 22/22] test/acpi-test-data: add ACPI tables for dimmpxm test, Michael S. Tsirkin, 2018/03/13
- Re: [Qemu-devel] [PULL 00/22] virtio, vhost, pci, pc: features, cleanups, Peter Maydell, 2018/03/16